Data Warehouse & Reporting Developer

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Posting Start Date: 3 Mar 2026

Location: Brussels, BE

Company: Serco Plc

Package Description

Joining Serco amazing team offers:

  • Competitive Salary
  • Great career opportunities
  • Corporate Benefits Package
  • International environment
  • Possible hybrid work

Job Introduction

Serco is the preferred partner for European institutions and international organisations, offering ICT services and contact centre management across Europe. Our expertise extends from information system support to consultancy under government frameworks, supporting key entities such as the European Commission and executive agencies. As a leader in service integration and management, we ensure seamless delivery of services across various platforms, embodying our commitment to excellence in every aspect of our work.

 

We are hiring a Front-end developer for the EU Commission in Brussels, Belgium, and various locations around Europe. The position is open to both employees and freelance contractors.

Key Responsibilities

 

Front-End Development:

  • Implement responsive layouts using HTML5, CSS3/SASS, and JavaScript.
  • Build, customize and maintain Twig templates for Drupal.
  • Develop and maintain CKEditor custom components.
  • Build reusable front-end components using JavaScript.
  • Ensure cross-browser compatibility and front-end performance optimisation.
  • (Optional) Design, implement and optimise responsive newsletter templates compatible with email clients (such as Outlook), ensuring visual consistency with EC branding guidelines.

 

User Experience / UI Design :

  • Analyse and translate business requirements into UX/UI concepts.
  • Propose and refine mockups, wireframes, and design improvements within the EC branding and guidelines constraints.
  • Ensure coherence, usability, and user-centred design across platforms.

 

API Integration:

  • Integrate REST APIs or JSON endpoints for dynamic data presentation.

 

Accessibility and Standards Compliance:

  • Ensure compliance with accessibility standards, such as WCAG.

 

Collaboration and Documentation:

  • Collaborate with technical and non-technical audience.
  • Maintain clear, well-structured documentation

Skills

 

Drupal Expertise:

  • Proven experience with Drupal 8/9/10.
  • Expertise in Drupal theming, Twig templates, and front-end integration of custom modules.
  • Experience working with components and component libraries, including integrating components into Drupal templates.
  • Understanding of multilingual setups and internationalization (i18n) for global projects.

 

Front-End Development Skills (JavaScript):

  • Excellent knowledge of Javascript, jQuery, JSON, AJAX.
  • Skilled in HTML5, CSS3, SASS.
  • Familiarity with modern front-end tools (Webpack, npm, etc.).
  • Experience developing and maintaining responsive newsletter templates (including compatibility
  • testing across major email clients) is considered an advantage.UX/UI Focus:
  • Ability to produce mockups, wireframes, or design prototypes using tools such as Figma or Adobe XD.
  • Understanding of design principles/best practices and constraints such as the Europa Component Library.
  • Ability to transfer wireframes into functional interfaces.
  • Knowledge of accessibility standards (e.g. WCAG).
  • Excellent visual attention to detail, with the ability to rapidly identify inconsistencies in layout, spacing,padding, and overall UI coherence.

 

Additional Skills

 

Version Control and Collaboration:

  • Experience using Git and collaborative tools like GitHub or GitLab.
  • Familiarity with Agile/Scrum workflows and tools like JIRA, Confluence.
  • Familiarity with Docker or other containerization tools.
  • Capability to write clear and structured technical documents.

 

Problem Solving and Debugging:

  • Strong debugging skills in Drupal environments.
  • Familiarity with browser developer tools and performance optimization

Special Expertise

  • Minimum 10 years of hands-on experience in developing responsive, cross-browser compatible web interfaces using modern HTML and CSS standards.
  • At least 5 years of experience working with JavaScript and associated technologies, including: jQuery, AJAX , JSON and GSAP (GreenSock Animation Platform)
  • Minimum 5 years of experience in Drupal theming, including template customization, theme development, and front-end integration.
  • Candidates must demonstrate certification or proven practical expertise in:
    • Usability Standards
    • Web Accessibility Standards (e.g., WCAG compliance, accessible UI implementation)

Qualification and Personal Skills

  • Master’s degree or higher in Computer Science, Information Technology, or a related field.
  • Excellent communication skills with the ability to engage effectively with both technical and non-technical stakeholders.
  • Strong autonomy with proven organisational and time-management capabilities.
  • Ability to adapt quickly to evolving technologies and digital trends.
  • Strong analytical and problem-solving skills.
  • Proactive mindset with the ability to identify and propose front-end and UX/UI improvements.
  • Advanced English proficiency (C1/C2 level – written and spoken).
    Additional European languages are considered an asset.
  • High degree of discretion and integrity, particularly when handling applications containing personal and confidential data.